Zobrazeno 1 - 10
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pro vyhledávání: '"Wapenaar, Kees"'
Autor:
Wapenaar, Kees
The study of wave propagation and scattering in time-dependent materials is a rapidly growing field of research. Whereas for 1D applications there is a simple relation between the wave equations for space-dependent and time-dependent materials, this
Externí odkaz:
http://arxiv.org/abs/2406.19933
We derive time reflection and transmission coefficients for 1D acoustic waves encountering a time boundary at which the properties of the medium change instantaneously. The time reflection and transmission coefficients are shown to be identical to so
Externí odkaz:
http://arxiv.org/abs/2406.15203
Publikováno v:
Wave Motion, 2024
Waves in space-dependent and time-dependent materials obey similar wave equations, with interchanged time- and space-coordinates. However, since the causality conditions are the same in both types of material (i.e., without interchangement of coordin
Externí odkaz:
http://arxiv.org/abs/2311.13428
Autor:
Thorbecke, Jan, Almobarak, Mohammed, van IJsseldijk, Johno, Brackenhoff, Joeri, Meles, Giovanni, Wapenaar, Kees
The Marchenko algorithm can suppress the disturbing effects of internal multiples that are present in seismic reflection data. To achieve this, a set of coupled equations with four unknowns is solved. These coupled equations are separated into a set
Externí odkaz:
http://arxiv.org/abs/2305.17639
Publikováno v:
GEOPHYSICS, vol. 89, NO. 3, P 1-8 (2024)
Recently, the focus of reflection seismologists has shifted to applications where a high-resolution image of the subsurface is required. Least-Squares Reverse-Time Migration (LSRTM) is a common tool used to compute such images. Still, its high comput
Externí odkaz:
http://arxiv.org/abs/2305.16420
In this report we investigate whether and under what conditions virtual seismology via the acoustic Marchenko method can be applied to DAS data from a survey in the province of Groningen, The Netherlands. Virtual seismology allows to retrieve the ban
Externí odkaz:
http://arxiv.org/abs/2305.13407
Autor:
Shirmohammadi, Faezeh, Draganov, Deyan, van IJsseldijk, Johno, Ghose, Ranajit, Thorbecke, Jan, Wapenaar, Kees
The Marchenko method is capable of estimating Green's functions between the surface of the Earth and arbitrary locations in the subsurface. This method enables the isolation of the response of a specific layer or package of layers, free from the infl
Externí odkaz:
http://arxiv.org/abs/2304.09956
Marchenko algorithms retrieve the wavefields excited by virtual sources in the subsurface, these are the Green's functions consisting of the primary and multiple reflected waves. The requirements for these algorithms are the same as for conventional
Externí odkaz:
http://arxiv.org/abs/2304.09780
Publikováno v:
Sci Rep 13, 13661 (2023)
Reservoir simulations for subsurface processes play an important role in successful deployment of geoscience applications such as geothermal energy extraction and geo-storage of fluids. These simulators provide time-laps dynamics of the coupled poro-
Externí odkaz:
http://arxiv.org/abs/2304.04311
Autor:
Brackenhoff, Joeri, Wapenaar, Kees
We show the capability of the Marchenko method to retrieve not only propagating waves, but also evanescent waves, based on a recent derivation of the Marchenko method that does not depend on up-down decomposition inside the medium of interest. We sho
Externí odkaz:
http://arxiv.org/abs/2304.03238